Per the DevBlog:
"Levels will cost much less on the main server (for example, 625 doubloons in 0.11.10)."
It's similar to the Dockyard in this sense.
I remember when the +500 XP was able to make a challenge mission doable in Co-Op, so I'll have fond memories of that reward.
I do agree that having the reward track be able to be completed without logging in each day is a good change. Max'ing out on Post-Progression Rewards would require going hard on Dailies, though.